No difference. Year of manufacture, colour or some plastic part that is 1 millimetre shorter. This automatically changes the model designation because the plastic part no longer fits on the 970.

Unfortunately, I couldn't find this information anywhere on the manufacturer's website or on the internet in general. It is best to contact the customer service directly :)

No, this radio can only receive analogue.

Check this: https://www.digitec.ch/de/s1/producttype/batterie-2123?pdo=23-20220%3A419745&tagIds=77-100

Hello yes, unfortunately my grandchildren also have this problem. And they got the device as a gift from me. It's very bad!!!

Yes, the unit has a corresponding socket.

Nope. http://www.lenco.com/p/scr-97-mp3-kids-3/?lang=de (so actually I would have to say YES, you could theoretically plug in / connect the mic at the headphone jack, but that won't do you much good as you can't record anything with it ;-)

Yes, the power supply unit is included in the scope of delivery. Batteries, however, are not.